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E. K. HILL. TIRE DEFLATING TOOL.

APPLICATION FILED JAN-13.15MB

1 ,3 1 9,280. Patented Oct. 21, 1919.

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ELWIN K. HILL, OF-CLEVELAND, OHIO.

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*israsfimmi of Letters n Patented oct. 21, 1919.

Application filed January 13, 1919. Serial No. 270,860.

- T all whom it may concern Be it known that I, ELWIN'K. HILL, a

citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Tire-Deflating Tools, of which the following is a specification.

This invention relates to a device for holding the valve of a pneumatic tire off its seat, thereby allowing the air to escape from the inner tube with which said valve is connected.

It frequently becomes necessary to deflate the inner tube, or air containing member, of a pneumatic tire, for various reasons, among which may be mentioned, the re moval of the tube from the outer casingfor the purpose of inserting it in .another case; for rolling or folding the said tube in a compact package for storage or transport; or for purposes of repairs. In the ordinary construction a valve case or tubular air intake and exhaust member is connected with the inner tube, said member being pro vided with a check valve normally closed by a spring and provided with a stem for the purpose of unseating the valve in opposition to the spring. The inconvenience of holding the valve open during the deflation of a. tire tube is well known to those familiar with pneumatic tires. The common practice is to insert a match, a nail, or a wire in the free end of the valve-casing and force the valve ofl its seat by pressure on the valve stem. By this mode of procedure it is difficult for one person to hold the valve open and manipulate the pneumatic tube to completely exhaust the air therefrom.

The primary object of the present invention is to provide, as a new article of manufacture, a simple, inexpensive device that can be readily connected with the intake and exhaust member, held in said connection by friction, and adjusted so that it will overcome the pressure within the tube and hold the valve open. Another object of the invention is the provision of a device that is efficient for the purpose set forth,

and that is also adaptable as a souvenir or an advertising medium.

With these objects in view, the invention consists in a friction clasp, preferably made of one piece, adaptcd to embrace or grip the exterior of the intake and exhaust memncr or valve casing, .and provided with an inturned projection or tongue adapted to press on the valve stem and thereby unseat the valve.

The construction of the improved device will be more fully set forth in the follow ing description, and pointed out definitely in the appended claims, reference being had to the accompanying drawing which is made a part of the specification, similar reference characters being employed to designate corresponding parts. In said drawing Figure l illustrates a fragment of the inner tube of a tire, and

shows the application of the improved device on the intake and exhaust member, a

portion of the free end of said member being in section to show the terminal of the valve stem.

Figs. 2 and 3 are views, in elevation, of the device detached, and in two positions at 90 to each other annularly.

Fig. L is an end view of the device.

Fig. 5 is a view opposite to that shown in Fig. 2.

Fig. 6 is an elevation of a modified form of the device.

The preferred form of the improvement comprises a collar orclasp 1 made of thin sheet steel, and having a longitudinal space 2 between the opposite edges 3 and 4. This collar is adapted to slide over the valve casing 5, and is slightly flaring at one end, as shown at 1 and slightly contracted on the opposite edge as shown at 1. An inwardly extending tongue 6 is formed on the collar, and projects centrally thereto, substantially as shown. When the collar is pressed over the member 5 the tongue 6 is in longitudinal alinement with the valve stem 7 and the pressure of said tongue on the stem 7 opens the valve. As very light springs are used on valves of this character, and as the area of the valve exposed to the internal air pressure is small, the resistance offered to the pressure of the member 6 on the stem 7, is weak, and the friction of the collar 1 on the member 5 is sufficient to maintain said collar in adjustment with the member 6 holding the valve open.

The utility and cheapness of the improved article make it desirable as an advertising medium or a souvenir to be given away by merchants or repair concerns. Fig. 5 illustrates this feature of the device.

In the modification shown in Fig. 6 the collar is provided with corrugations 1 as a means for increasing the friction of said collar on the member 5.

\Vhat I claim and desire to secure by Letters Patent is.

1. A tire deflating tool comprising a one piece resilient clasp having a contracted annular edge that embraces the tire valve-casing, and an integral projection on. said clasp that presses on the valve stem thereby unseating the valve.

2. A tire deflating tool comprising a one piece corrugated resilient clasp that embraces the tire valve-casing, and an integral projection on said clasp that presses on the valve stem thereby unseating the valve.

3. A tire deflating tool comprising one piece of sheet metal rolled into a collar having a single slit extending the entire length thereof adapting the collar to be sprung annnlarly, the edge of one end of the collar being contracted and the edge of the opposite end flared outward, and an inwardly disposed tongue formed on the contracted end of the sleeve.

In testimony whereof I aflix my signature.

ELWIN K. HILL. 

